Home / 2,817.66-3,889.64-1,875.12

Finding the Fourth Proportional to 2,817.66, 3,889.64 and 1,875.12

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Solution

The fourth proportional to 2,817.66, 3,889.64 and 1,875.12 is: 2,588.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.66 : 3,889.64 = 1,875.12 : x
  2. Step 2: Convert to fraction form
    2,817.66/3,889.64 = 1,875.12/x
  3. Step 3: Cross multiply
    2,817.66x = 3,889.64 × 1,875.12
  4. Step 4: Simplify right side
    2,817.66x = 7,293,541.76
  5. Step 5: Solve for x
    x = 7,293,541.76/2,817.66
  6. Step 6: Final answer
    x = 2,588.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.